Tree-ring measurements of Picea mariana (Black spruce) from sample SCHEFPMA-92
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Species PCMA; No of rings 107; Begin 1882; End 1988
物种:PCMA;环数量:107;起始年份:1882;终止年份:1988

Species PCMA; No of rings 107; Begin 1882; End 1988
物种:PCMA;环数量:107;起始年份:1882;终止年份:1988